78 lines
1.7 KiB
Rust
78 lines
1.7 KiB
Rust
// run-rustfix
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#![warn(clippy::assertions_on_result_states)]
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use std::result::Result;
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struct Foo;
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#[derive(Debug)]
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struct DebugFoo;
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#[derive(Copy, Clone, Debug)]
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struct CopyFoo;
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macro_rules! get_ok_macro {
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() => {
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Ok::<_, DebugFoo>(Foo)
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};
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}
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fn main() {
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// test ok
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let r: Result<Foo, DebugFoo> = Ok(Foo);
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debug_assert!(r.is_ok());
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assert!(r.is_ok());
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// test ok with non-debug error type
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let r: Result<Foo, Foo> = Ok(Foo);
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assert!(r.is_ok());
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// test ok with some messages
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let r: Result<Foo, DebugFoo> = Ok(Foo);
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assert!(r.is_ok(), "oops");
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// test ok with unit error
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let r: Result<Foo, ()> = Ok(Foo);
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assert!(r.is_ok());
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// test temporary ok
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fn get_ok() -> Result<Foo, DebugFoo> {
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Ok(Foo)
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}
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assert!(get_ok().is_ok());
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// test macro ok
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assert!(get_ok_macro!().is_ok());
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// test ok that shouldn't be moved
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let r: Result<CopyFoo, DebugFoo> = Ok(CopyFoo);
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fn test_ref_unmoveable_ok(r: &Result<CopyFoo, DebugFoo>) {
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assert!(r.is_ok());
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}
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test_ref_unmoveable_ok(&r);
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assert!(r.is_ok());
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r.unwrap();
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// test ok that is copied
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let r: Result<CopyFoo, CopyFoo> = Ok(CopyFoo);
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assert!(r.is_ok());
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r.unwrap();
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// test reference to ok
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let r: Result<CopyFoo, CopyFoo> = Ok(CopyFoo);
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fn test_ref_copy_ok(r: &Result<CopyFoo, CopyFoo>) {
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assert!(r.is_ok());
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}
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test_ref_copy_ok(&r);
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r.unwrap();
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// test err
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let r: Result<DebugFoo, Foo> = Err(Foo);
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debug_assert!(r.is_err());
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assert!(r.is_err());
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// test err with non-debug value type
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let r: Result<Foo, Foo> = Err(Foo);
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assert!(r.is_err());
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}
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